Adjusting-screw



(EQ ModeL J. H'. QUGK. ADJU'STING SCREW;

Ew, @5mm Patente@ Apr. 2a, 189i.

vro

Nr-ren? 'dr-Mns JOHN n; QUICK, or

Anw-sri Nl Cincinnati, onio essoaevv..

SPGFICATION forming part of Letters Patent No. 451,071, dated AprilS, 1891.

Application nea neemt-r 22,139

To @ZZ tnto'm'i may concern:

' Be itknown that LJOHN ll. QUICK-,a citizen' of the United States, residing at Cincinnati, in the county of Hainiltonland-Stateof Ohio," have invented. certain' new '1 'and' useful: Irnproventientsy in l Adj u`sti.ng-Scre\vs;" and I. dov hereby declare the following to bea full, clear,

and exact description of lthe invention, reference beinghad -to 'the annexed drawings,

which foi-xn part .otthis specification.

This invention relates tothose screwswherewith anyshiftable part of an instrunient or machine may be moved with'reference to a *I fullydescrbed.

fixed part and thensecurely heldinthe desiredposition 'and .my improvement consists in making such lad j listing devices of two separate. and distinct members. One of these member'si's a fsleeve serewthreaded extez`- nally, but. having a smooth or unthreaded axial here, which-sleeve engages with a threaded-forice of vtheshiftable part of the machineandhas one endincontact with the lixedgpamV thereof. The otherlnember of the adjusting device takes the shape of 'an ordi'- naryserew or holt with a head or equivalent turning appliance atone end and ascrewthreadat its other end, the intermediate portion 'or barrel of said screw being Unthreaded, or atleast incapable of engaging with the sleeve. vThe proper Vadjustment of the instrument o r machine is effected by screwing the sleeveiuto the .shit'table part until it bears against the fixed part and then passing the-screw or'boltthrough said sleeve vand engaging its threaded portion with a female thread of said xed part, as hereinafter more In the annexed drawings, Figure l shows a :pair of-'iny adjusting-screws arranged for use 4o* partsof the screws and bearing being-sepa- With an ordinary' journal-bearing, the Yvarious rated from eachother and one of the sleeves,

i -being-s'eetio1 i edv Fig-s'liowsfa shaft journaledinthe bearing. and scoured by.a can which' latter; is zidjusted- '.to ,said shaft and held in "pi'aee by the. adj usting-screws.

.- f For the .purpose of illustrating the 'principle :of "niy'iniention'- E have selected an ordiing et boxjor Serial-lilot 375,461, (No model.)

pillow A and removable cap B, which parts are adapted to receive a shaft C. Candi has with are engaged the screW-tlneads EE of heads or other turning appliances G G and Vsmooth or uli-threaded axial bores ll H. y I I are-'fthe barrelsof screws or bolts J J4', which bolts have' heads or other turning ap- `planees K K and threaded portionsl L L',

which latter are adapted/to engagewlth base or pillow A; Journal'ed in thebearing A Bthe sleeves F D D- md are-screwed therein u util the ends low lfnandthen said sleeves are turned cautiously untiltl1e desired adjustment ot cap B has been" effected', lhis--turningof the sleeves is then stopped, and they are afterward travsniooth boresll Ijlrotsai'dsleeves. rlhese `retainingbolts aire screwed into the sockets M M until their 'header-KK" vbear veryirmly 'against the enten ends lot the sleeves', 'which act fastensthe cap securely to pillow A, and thus prevents accidental shifting or detachment of these two parts A and B.

From the above description it is apparent that the'adjustment-is effected Wholly by the pairt .is performed' entirely by the bolts or screws, thus dividing the duty between. the members F and J. Hence it' is evident that this construction has a decided advantage 'over those arrangements Where a single screw or bolt must perform the twofold duties of .adjusting the movable or shiftable part and then holding it'in place. Finally my invento another, either forflevellingor focusing or applying tens-ion .er ,for any adjusting pur= posewhatever.. .A

clai ui my in ven' tion F 'are engagecbwith `the threaded apertures.

ers'ed by the retaining screws orbolts J J f the smooth barrels etw-which I 1 occupy the"` apair of screw-threaded holes D D", wherei sleeves- F Fv, whichA sleeves have'suitable 6o threaded -apert-ureser sockets-M M off the Atter'the shaft C, hasbeen ot said sleeves coxnejin Contact with 'the -pilsleeves, While theV retaining of the movable .90 tion has-'beensiioxvnas adapted to a journal box efr bearing, although it not 4limitedte any special'duty, but 'may-.be used Wliemever,

itis desired 4to more one part with reference A :stationary memhe1A,having a screwl1,i11cfa,f1ed portion M, and a shiftahle mernbel` B, having a screw-threaded opening I), in combination with the sleeve E F H and 5 headed fastener J K, whose thread L engages with said screw portion M, herein described.

for the purpose i In testimony whereof I affix my signature in presence of two witnesses.

JOHN H. QUICK.

`Witnessesz JAMES H. LAYMAN, ;lrSAMUEL M. QUINN. 

